Repair-tool.



No. 884,751. PATENTBD 11111. 14., 1908. G. 11.1111151111 1 c. W. 131110111110011.

REPAR TOOL.

APPLICAToN FILED 1120.2. 1907.

"entren enfantine GEORGE B. MCBEAN AND (.THARLES W. lllttfllWUOl), Ol" tlliltfAGO, ILLINOT MECHANICAL c ELECTRICAL MANUFACTURING tjOBlPANY CORPORATION 01" ILLINOIS.

It), 7 Oi" CHICAGO,

REPAIR-TOOL.

Application filed December 2, i907.

To all whom 'it may concern:

Be it known that we, Gnonon Il. MelSnAN, a eitlzen ofthe bnited States, and o resident -of Chicago, Cook eounty, lllinois, sind CHARLES W. Binernvoon, :i subject ol" tlie King of Great Britain, and a resident ot' (,'liicago, Cook eounty, illinois, llave invented certain new and usol'ul lm irovements in ltepei1'-'l`ools,of wliielLtlie following' is :i speellication.

This invention relates to repair tools por-- tieularly adapted l'or (.:ompressine tlieI valve springs of gasolene motors and tlio like, to provide for relieving the pressuri-y ol' tlie springs on the valves in order that said valvel may loe conveniently removed.

As is well known, tlmvalves ol` ensoleim engines are almost always maintained normally closed by means oi springs inserted between rigid portions ol' tlie motor l'rann. or valve easing and oi' the valve, usuallbP oups, collars or the like, secured to the valve stoms in proper position. \\'l1en it. is desired to rernove tlie valves, it is'neeessar)V to relieve the saine from the pressure olIV ille springs ap plied thereto.

The object ot' tlie present invention is to provide an improved tool for tliis purpose, wliieli is olsimple,` strontr and durable oonstruetion; wliioli is ellieiont. and ronv'enient for the designed purpose and admits f-l' a nf'iderangool' application; and u'liif-li-maj: lio folded or nested into small oompass to provide for conveniently oarryinej tlal same.

To eil'eet tlie loregoing olriw-ts, a repair ltool ol' our invention eomprist-s lli:l various features, combinations olI` l'eatures and d tails of construction lieroimilter dosorila'd and eleimed.

ln tlie a:eenipanyine` drawings, in n'liieli our inventionis lull)v illustrated,-Y lfigurol is a perspective View ot our improved repair tool, s moine; tlie same in eondition tor use. Fig. 2 is. a, longitudinal set-tional elevation thereof taken, eulrstan'tiall)Y on tlie lint` 2 2 of Fig. l, showing tlie l'ulr'rum liar in l'olded or nested position. Figi'. i. is a irriguo-litany View, in porspeotive, showing a modified form ol' our improvedtool, as 'regards tile llleruinlnu' and l'ulerum pin; and ltie. l is; a .partial sectional vie-iv tlirougli tlie valve olieinber of a gasoleno motor, slowing tire Specification o Letters Patent.

Patented April. t, 1906.

Serial No. 404,797.

vulve in elevetion, and a tool of our invention -applied lor eoinpressing; tlie valve spring opemnej i tiersy l and 2 tliorool. At. oneend tlie oer .i

and 2 are lient outwardly, l'orminef a fork t,

pivotod between tlie sides ol' tvliioii ore spring:y (engaging,r means, :is slioxvn a plato E) provided nit l1 a rSlot l() adapted to receive tlie stein of a valve to provide tor insertingr Said plate lioneatli :i valve spi-ine. As shown, said plato l! is pivoted to tile lorie-| l@Y means ol" lugs ll on said plate. ffitli this eonstruf-- tion it is: obvious tliat tlul plate ll will be. free to aeeommodate itsoll to' verving positionsv ol' tlie valve spring, as tllelover A is turned on its lult-rum.

(.)urimprovetl tool also oomprises a l'uleruin llar l2 adopted to lio inserted tlirongli tlie slot 7 in tluI lever A, lormod in vvliieli :1re notel'ies lil adapted toene-age a l'ulerum pin i4 se.- -urod in tlnI lever members l and L und wliit'li extends :ir'ross said slot 'Vlie i'ul erum pin lil is proloralilv loonted as close as praotioablo to tire l'orked end s ot tlie lever A and is preferably provided uitli zi Series ol' noo-lies lf3 to adapt tlnl tool tor use under dilleronl oonditions. 'Vlie lower end ol. tl'ie. lulf'rum liar l2 if: prol'eralilv pointed to insurra proper engagement ot' tiro end oil said lidi-rum imi' \vitli tlie part upon wliieli in rests in use, usuall)Y n part ot die motor trame, so :is to prevent die saine from slippine:

'ille l'ulorum liar l2 is prel'ei'ulrlv made en tirol;- .separato and detaelied iront tire lever A. and i adapted to lio inserted lengthwise into tino slot 7, as sliovrn in kie'. if, said slot trein;l inadol' suoli 'vvitllli tlial tile nitmlni's; l and loi-mii lef: ol' slot tviil l'rirtionallf: l fe tiro Sides ol.I said l'ulerum intr l2 .vitli :#uil'u ient .toreo to' prevont atiidontal disentI heurt-.nt tliereoil Said slot. T lori-ns. in elle'l itli or lire' for foldingl perte ot 'fire tool into .livrent t die e small compass to provide for conveniently carrying the same and, also, at all times insuring the presence of a tulcrum bar with the lever. As a further safeguard against accidental disengagement and possible loss of the l'ulcruin bar 12, we provide a notch 15 in the upper end thereotl which is adapted to engage the t'ulcrum pin 14 when said tulcrurn bar 1'2 is inserted into the slot 7.

Other means than those shown for removabl securing the lulerum bar 12 in the slot 7, wil readily suggest themselves to mechanics of ordinary skill and we do not, therefore, desire to limit ourselves to the particular means shown, which, however, on account of their simplicity and convenience, we now consider preferable for the purpose.

ln Fig. 3 of the drawings, we have illustrated a modilication of our improved tool, said modi'lication relating particularly to the means for engaging the l'ulerum bar with the lever. In this modiiication, A1 designates the lever, comprising members 11 and 21, 121 the tulcrum bar, and 141 the lulcruin pin. The l'ulcrum pin 141, instead of being permanently secured in the lever A1, is made separate therefrom, and is ii'iterchangeable in a series ot holes 16 in the tulcruni bar 121. Said fulcrum pin 141 is longer than the thickness of the tulcrum bar 121 and is designed to project at both sides thereof, so as to engage the under side of both melnbers 11 and 21 of i the lever A1. notches 17 being preferably i readily prevented.

formed in the lower edges ot said lever members 11 and 21 adapted to receive the projecting ends of the tulcrum pin 141, whereby slipping oi. said lever on the fulcrum pin will be To fold or nest this form of our improved tool, it will obviously be necessary to remove the t'ulerum pin 141. When so removed, said fulcrum pin may be secured in a suitable hole or opening in the lever A1 to prevent said fulcrum pin from being lost or misplaced. While this modification is less' convenient than the form ot tool shown in Figs. 1 and 2 and is open to the further objection that it includes one more detached part or ieee, it will obviously operate in substantial y the same manner, and will be equally ei'l'ective for accomplishing the end designed, as the form oll tool first described.

To illust-rate the manner ol' using our iinproved tool, we have, in Fig. 4, shown the same as applied for its designed purpose otl compressing the valve spring of a gasolene motor.

The engine parts shown are ot' conventional form and will' be readily understood by persons skilled in the art, without a. detailed descri )tion thereol', the valve B being maintaine normally closed by means el' a spring B1 inserted between a shoulder oll the valve casing and a cup or plate b1 secured tothe valve stem B2 by means ot' the usual key b inserted through a keyway formed in saidaser/5i valve stem, the force et the valve spring B- being applied to the valve through the medium ot said plate b1 and key /v l'Vhen it is desired to remove the valve E, the plate Q el our improved tool is inserted beneath the cup or plate 1 on the valve stem, the vlulcruin bar 12 is inserted through the slot 7 in the lever A and the Fulcrum. pin 1e engaged with one ot the slots By means of the lever A, the valve spring B may new be easily compressed to relieve the lrey b2 from the pressure thereof and said hey conveniently removed, whereupon. the vali" i with its valve stein is l'ree to be withdrawn through a suitable. opening provided lor the purpose in the valve chamber, said opening being normally closed by means ot' a suitable plug B-f We claim:

1. A repair tool comprising a lever provided with a longitudina1V slot, a tulcruinhar and a l'uleruin pin l'er operatively engaging said lulcruin bar with said lever, the slot in said lever being adapted to receive said lul-'- cruin bar lengthwise, and .nn-ans tor removably securing said bar in said slot.

2. A repair tool comprising a lever previded with a longit udinal slot, a iulrruni pin secured in said .lever which extends across the slot therein, and a l'nlcrinn bar adapted.

to lie-inserted through said slot in said lever provided with a notch or notches adapted to engage said tnlcruni pin, the slot in said lever being adapted to receive said tulcrum bar lengthwise, and means lor removably securing said bar in said slot.

3. A repair tool comprising a lever provided with a longitudinal slot, a l'ulcrum pin secured in said lever which extends across the slot therein, and a l'ulcruin bar adapted to be inserted through the slot in said lever provided with a notch or notches adapted to engage said l'nlcruin pin, 'the slot in said lever being adapted to receive said l'ulcruin bar lengthwise, the relation being such that the sides.' of said slot will .trictionally the sides oi' said fulcrnin bar when inserted therein.

Lt. A repair tool comprising a lever provided with a longitudinal slot, a lulerum pin secured in said lever which extends across the slot therein, and l'nlcrum bar adapted serted therein lengtl'nvise.

5. A repair tool comprising a lever, said lever comprising rigidly connected, spaced members forming a slotextending lengt iwise Salif/5 1 of said lever, a fulcrum pin secured in said lever which extends across the slot therein, la

fulcrum bar adapted to be inserted through f therein, and a fulcrum bar adaptedl to be inserted through said slot and provided with notches adapted to engage said fulcrum pin,

` the slot in said lever being adapted to receive said ulcruin bar lengthwise and the relation being" such that the -sides of said slots will irictlonally engage the sides of said fulcruni bar. 7. A repair tool comprising a lever, said lever comprising rigidly connected, s aoed members formin r a slot extendingr lengt wise `of said lever, a liulcruin pin secured in said lever which extends across the slot therein,

and a ulcrum bar adapted to be inserted through said slot and provided with a notch or notches adapted to engage said-fulcruni pin, the slot in said lever being adapted to receive said fulcrum bar lengthwise, the relation being'such`that the sides of said slot will frictionally engage the sides of said fulcrunihar, and said fulcrum barbeing provided at one end vNif-ith anotch adapted to engage the fulcrum 8. A' repair tool comprising a lever, a fork formed at one end thereof, and an integral plate adapted for engagement with a valve spring pivoted to said fork, said plate being 4o provided with a slot adapted to receive the the valve stem.

In testimony, that we claim the foregoing as our invention, we aflix our signatures, in presence of two subscribing witnesses, this 21st day of November, A. D. 1907.

GEORGE B. MCBEAN. CHARLES W. BIRCHWOOD. 

